Mechanical grate type garbage gasification incineration system and its treatment method

Abstract

The invention discloses a mechanical grate type garbage gasification incineration system. The mechanical grate type garbage gasification incineration system comprises a gasification incinerator and a circulation air supply system of the gasification incinerator. The gasification incinerator comprises a feeding bin, a gasification furnace and a burn-off furnace. A stockpiling sealing section is arranged between the feeding bin and the gasification furnace. A residue pushing device is arranged between the gasification furnace and the burn-off furnace. The upper end of the gasification furnace is arched and provided with a smoke outlet, and the upper end of the burn-off furnace is arched and provided with a smoke outlet. The garbage disposal method includes the steps that firstly, furnace starting and furnace baking are conducted; secondly, garbage is burnt in a hearth of the gasification furnace; thirdly, continuous gasification incineration disposal of garbage is conducted; and fourthly, after garbage and garbage residues are burned off, the mechanical grate type garbage gasification incineration system is shut down. The mechanical grate type garbage gasification incineration system is used for disposing garbage so that large-scale continuous gasification incineration disposal of garbage can be achieved, the garbage disposing amount is larger, the garbage conveying capability is higher, the heat recovery rate is high, and the emission of pollutants can be effectively reduced.

Description

technical field [0001] The invention belongs to the technical field of solid waste incineration treatment, and in particular relates to a mechanical grate type garbage gasification incineration system and a treatment method thereof. Background technique [0002] The existing waste treatment technologies mainly include incineration, sanitary landfill, composting, and waste recycling. Among the conventional waste treatment technologies, incineration has the advantages of obvious reduction effect, complete harmlessness, small land occupation, utilization of waste heat energy, and less secondary pollution, which meets the strategic requirements of my country's sustainable development. However, with the continuous improvement of environmental protection requirements at home and abroad, how to strengthen the control of secondary pollution is particularly important. Therefore, waste pyrolysis and gasification incineration technology is gradually pushed to the road of industrial ap...

AI Technical Summary

Problems solved by technology

[0007] 2. With the increasing amount of garbage generated and piled up like mountains, the amount of garbage treatment must be effectively increased in order to meet market demand

[0010] Existing gasification incinerators, such as the following two invention patents: Multi-column segmented drive compound domestic waste incinerator (ZL200710092508.9) and two-stage waste incinerator (ZL201010268376.2) Unsolved problems: heat treatment of waste The mode is relatively backward, just drying-burning-burning, the process of solid combustion releasing heat; the thermochemical reaction in the furnace is dominated by oxidation reaction, supplemented by reduction reaction, which is easy to produce secondary pollutants; when garbage is burned in the furnace, the peroxygen coefficient Large, large amount of primary air and secondary air supply, high dust content in flue gas, great impact on heat energy recovery system and flue gas treatment system, easy to accumulate dust, large amount of flue gas, reducing heat conversion efficiency; Without a separate gasification furnace and ember furnace, waste can only be processed in batches, and large-scale continuous gasification and incineration of waste cannot be realized, and the amount of waste treated is small

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